金刚石粒度对金刚石镀镍的影响  

Effect of size of diamond particles on nickel plating of diamond

作　　者：方莉俐[1] 薛丽沙 

机构地区：[1]中原工学院,河南郑州450007

出　　处：《电镀与涂饰》2015年第23期1351-1354,共4页Electroplating & Finishing

基　　金：河南省教育厅科学技术研究重点项目(14A140024)

摘　　要：在人造金刚石表面化学预镀薄镍后再电镀厚镍,以增强金刚石颗粒的物理化学性能。通过扫描电镜、激光粒度粒形分析仪、抗压强度测定仪等研究了金刚石粒度对镀镍金刚石形貌、平均粒径、平均抗压强度等性能的影响。电镀镍液配方和工艺为：硫酸镍200~300 g/L,氯化镍20~40 g/L,硼酸30~35 g/L,镀瓶转速0~23 r/min,电流1.5 A,时间5 h。结果表明,镀镍金刚石表面的镍层均匀、致密,完整包覆。随金刚石粒度的增大,镀速增大,镀镍金刚石平均粒径和抗压强度的增长率也增大。In order to improve the physical and chemical properties of diamond particles, a thin nickel coating was electrolessly pre-plated and then a thick nickel coating was electroplated on artificial diamonds. The nickel electroplating bath composition and process conditions are as follows： nickel sulfate 200-300 g/L, nickel chloride 20-40 g/L, boric acid 30-35 g/L, rotation rate of plating bottle 0-23 r/min, current 1.5 A, and time 5 h. The effect of the size of diamond particles on the morphology, weight gain rate, average diameter, and average compressive strength of nickel plated diamonds was studied by scanning electron microscope, laser particle size and shape analyzer, and compressive strength tester respectively. It is shown that the surface of nickel plated diamond particles is uniform, compact, and completely coated by nickel coating. With increasing size of diamond particles, the deposition rate as well as the growth rate of average size and compressive strength of nickel plated diamond particle are increased.

关 键 词：金刚石 镀镍 粒径 性能 

分 类 号：TQ153.12[化学工程—电化学工业]